VENTUS - catalogue - 2013

Supply-exhaust AHUs: rotary exchanger
Mixing box, Heating, Cooling

Base AHU
VS 21÷650 sizes

K

Hf = 80mm
H

VS 21÷650 sizes L

VS - - R - RMHC

K

Hf = 80mm
H

L

VS - - R - RMCH

VS Vmin Vmax L L* L1 K K* H H2 W
[mm] [mm] [mm] [mm]
[m3/h] [CFM] [m3/h] [CFM] [mm] [mm] [mm] [mm] hxw
731 [mm]
731
21 1193 702 2200 1295 3318 3684 2587 366 731 528 976 961 313x 821
30 1586 933 3100 1825 3318 3684 2587 366 731
40 2099 1235 4100 2413 3318 3684 2587 366 731 660 1240 961 440x 821
55 2878 1694 6054 3563 3684 4050 2953 366 731
75 3805 2240 8150 4797 3684 4050 2953 366 731 660 1240 1168 440x 1028
100 4863 2862 10700 6298 4050 4415 3318 366 731
120 5985 3523 13300 7828 4050 4415 3318 366 731 795 1510 1339 575x 1199
150 7415 4364 16400 9653 4415 4781 3684 366 731
180 8640 5085 19900 11713 4415 4415 3684 366 731 915 1750 1480 695x 1340
230 10640 6262 24600 14479 4415 4415 3684 366 731
300 13491 7941 32900 19364 4781 4781 4050 366 731 1015 1950 1660 795x 1520
400 18704 11009 44500 26192 4781 4781 4050 366 731
500 22399 13184 54000 31783 4781 4781 4050 366 1052 2024 1891 832x 1751
650 28725 16907 71400 42025 4781 4781 4050 366
L* - air supply side length in configuration with a liquid trap behind a cooler 1153 2226 2085 933x 1945
K* - K distance for sets with a liquid trap
1357 2714 2085 1137x 1945

1357 2714 2493 1137x 2353

1656 3312 2585 1436x 2445

1889 3778 3085 1669x 2945

1889 3778 3585 1669x 3445

2366 4732 3697 2146x 3557

Vmax - Parametres description on page 20

Presented AHU’s length is proper for AHU that is equipped with direct driven PLUG-FANS (21÷650 delivered in sections).

VS - 15 - R - SE / PHCH / EF -

size of an AHU access side optional code of a base optional the assembly method for VS 10-15 AHUs
R - right functions AHU functions (suspended AHUs)
L - left (the option before a base behind a base COMPACT – compact AHU
available for VS 21-650
units) AHU AHU

47

Supply-exhaust AHUs: rotary exchanger
Heating, Cooling, Heating

Base AHU

VS 21÷650 sizes

K

H
Hf = 80mm

L

VS - - R - RHCH

VS Vmin Vmax L L* L1 K K* H H2 W
[mm] [mm] [mm] [mm]
[m3/h] [CFM] [m3/h] [CFM] [mm] [mm] [mm] [mm] hxw h1 x w1
1829 528 [mm] [mm]
1829 660
21 1193 702 2200 1295 3684 4050 1856 1463 1829 660 976 961 313x 821 250x660
30 1586 933 3100 1825 3684 4050 1856 1463 2194 795
40 2099 1235 4100 2413 3684 4050 1856 1463 2194 915 1240 961 440x 821 380x613
55 2878 1694 6054 3563 4050 4415 2221 1829 2560 1015
75 3805 2240 8150 4797 4050 4415 2221 1829 2560 1052 1240 1168 440x 1028 440x821
100 4863 2862 10700 6298 4415 4781 2587 2194 2560 1153
120 5985 3523 13300 7828 4415 4781 2587 2194 2194 1357 1510 1339 575x 1199 440x1028
150 7415 4364 16400 9653 4781 5147 2587 2194 2194 1357
180 8640 5085 19900 11713 4781 4781 2587 2194 2560 1656 1750 1480 695x 1340 575x1199
230 10640 6262 24600 14479 4781 4781 2587 2194 2560 1889
300 13491 7941 32900 19364 5147 5147 2953 2560 2560 1889 1950 1660 795x 1520 695x1340
400 18704 11009 44500 26192 5147 5147 2953 2560 2560 2366
500 22399 13184 54000 31783 5147 5147 2953 2560 2024 1891 832x 1751 795x1520
650 28725 16907 71400 42025 5147 5147 2953 2560
L* - air supply side length in configuration with a liquid trap behind a cooler 2226 2085 933x 1945 795x1520
K* - K distance for sets with a liquid trap
2714 2085 1137x 1945 795x1520

2714 2493 1137x 2353 740x1913

3312 2585 1436x 2445 933x1945

3778 3085 1669x 2945 933x2650

3778 3585 1669x 3445 933x3150

4732 3697 2146x 3557 933x3250

Vmax - parametres description on page 20

Presented AHU’s length is proper for AHU that is equipped with direct driven PLUG-FANS (21÷650 delivered in sections).

** Optional functions are available for VS 21÷650 AHUs only.
*** Optional function is available for VS 10÷650 AHUs (VS 10÷15 AHUs are equipped with the function of mixing defined just as a set of two air dampers).

Inlet/Outlet configurations of E empty section are presented on page 53.
Inlet/Outlet configurations of M mixing box are presented on page 53.
Dimensions of optional functions are presented on page 53.

Applying a priority air treatment function.

48

Supply-exhaust AHUs: rotary exchanger
Mixing box, Heating, Cooling, Heating

Base AHU

VS 21÷650 sizes

K

Hf = 80mm
H

L

VS - - R - RMHCH

VS Vmin Vmax L L* L1 K K* H H2 W
[mm] [mm] [mm] [mm]
[m3/h] [CFM] [m3/h] [CFM] [mm] [mm] [mm] [mm] hxw
1097 [mm]
1097
21 1193 702 2200 1295 3684 4050 2953 731 1097 528 976 961 313x 821
30 1586 933 3100 1825 3684 4050 2953 731 1097
40 2099 1235 4100 2413 3684 4050 2953 731 1097 660 1240 961 440x 821
55 2878 1694 6054 3563 4050 4415 3318 731 1097
75 3805 2240 8150 4797 4050 4415 3318 731 1097 660 1240 1168 440x 1028
100 4863 2862 10700 6298 4415 4781 3684 731 1097
120 5985 3523 13300 7828 4415 4781 3684 731 1097 795 1510 1339 575x 1199
150 7415 4364 16400 9653 4781 5147 4050 731 1097
180 8640 5085 19900 11713 4781 4781 4050 731 1097 915 1750 1480 695x 1340
230 10640 6262 24600 14479 4781 4781 4050 731 1097
300 13491 7941 32900 19364 5147 5147 4415 731 1097 1015 1950 1660 795x 1520
400 18704 11009 44500 26192 5147 5147 4415 731 1097
500 22399 13184 54000 31783 5147 5147 4415 731 1052 2024 1891 832x 1751
650 28725 16907 71400 42025 5147 5147 4415 731
L* - air supply side length in configuration with a liquid trap behind a cooler 1153 2226 2085 933x 1945
K* - K distance for sets with a liquid trap
1357 2714 2085 1137x 1945

1357 2714 2493 1137x 2353

1656 3312 2585 1436x 2445

1889 3778 3085 1669x 2945

1889 3778 3585 1669x 3445

2366 4732 3697 2146x 3557

Vmax - parametres description on page 20

Presented AHU’s length is proper for AHU that is equipped with direct driven PLUG-FANS (21÷650 delivered in sections).

VS - 15 - R - SE / PHCH / EF -

size of an AHU access side optional code of a base optional the assembly method for VS 10-15 AHUs
R - right functions AHU functions (suspended AHUs)
L - left (the option before a base behind a base COMPACT – compact AHU
available for VS 21-650
units) AHU AHU

49

Supply-exhaust AHUs: glycol system Hf = 80mm
Heating HxW

Base AHU

VS 21÷650 sizes

L

VS - - R - GH

VS Vmin Vmax L HW hxw h1 x w1
[m3/h] [CFM] [m3/h] [CFM] [mm] [mm] [mm] [mm] [mm]

21 1167 687 3080 1813 1856 528 961 313x821 250x660
30 1586 933 4322 2544 1856
40 1958 1152 5661 3332 1856 660 961 440x821 380x613
55 2878 1694 8216 4836 2221
75 3805 2240 11379 6697 2221 660 1168 440x1028 440x821
100 4863 2862 13550 7975 2587
120 5815 3423 18079 10641 2587 795 1339 575x1199 440x1028
150 7167 4218 22420 13196 2587
180 8640 5085 27220 16021 2587 915 1480 695x1340 575x1199
230 10398 6120 33460 19694 2587
300 13491 7941 44760 26345 2953 1015 1660 795x1520 695x1340
400 18704 11009 60501 35610 2953
500 21817 12841 74350 43761 3318 1052 1891 832x1751 795x1520
650 28725 16907 98500 57975 3684
1153 2085 933x1945 795x1520

1357 2085 1137x1945 795x1520

1357 2493 1137x2353 740x1913

1656 2585 1436x2445 933x1945

1889 3085 1669x2945 933x2650

1889 3585 1669x3445 933x3150

2366 3697 2146x3557 933x3250

Vmax - parametres description on page 20

Presented AHU’s length is proper for AHU that is equipped with direct driven PLUG-FANS (21÷650 delivered in sections).

** Optional functions are available for VS 21÷650 AHUs only.
*** Optional function is available for VS 10÷650 AHUs (VS 10÷15 AHUs are equipped with the function of mixing defined just as a set of two air dampers).

Inlet/Outlet configurations of E empty section are presented on page 53.
Inlet/Outlet configurations of M mixing box are presented on page 53.
Dimensions of optional functions are presented on page 53.

50

Supply-exhaust AHUs: glycol system
Heating, Cooling

Base AHU
VS 21÷650 sizes

Hf = 80mm
HxW

L

VS - - R - GHC

VS 21÷650 sizes

Hf = 80mm
HxW

L

VS - - R - GCH

VS Vmin Vmax L L* HW hxw h1 x w1
[m3/h] [CFM] [m3/h] [CFM] [mm] [mm] [mm] [mm] [mm] [mm]

21 1167 687 2200 1295 2221 2587 528 961 313x821 250x660

30 1586 933 3100 1825 2221 2587 660 961 440x821 380x613

40 1958 1152 4100 2413 2221 2587 660 1168 440x1028 440x821

55 2878 1694 6054 3563 2587 2953 795 1339 575x1199 440x1028

75 3805 2240 8150 4797 2587 2953 915 1480 695x1340 575x1199

100 4863 2862 10700 6298 2953 3318 1015 1660 795x1520 695x1340

120 5815 3423 13300 7828 2953 3318 1052 1891 832x1751 795x1520

150 7167 4218 16400 9653 2953 3318 1153 2085 933x1945 795x1520

180 8640 5085 19900 11713 2953 2953 1357 2085 1137x1945 795x1520

230 10398 6120 24600 14479 2953 2953 1357 2493 1137x2353 740x1913

300 13491 7941 32900 19364 3318 3318 1656 2585 1436x2445 933x1945

400 18704 11009 44500 26192 3318 3318 1889 3085 1669x2945 933x2650

500 21817 12841 54000 31783 3318 3318 1889 3585 1669x3445 933x3150

650 28725 16907 71400 42025 3318 3318 2366 3697 2146x3557 933x3250

L* - air supply side length in configuration with a liquid trap behind a cooler Vmax - parametres description on page 20

Presented AHU’s length is proper for AHU that is equipped with direct driven PLUG-FANS (21÷650 delivered in sections).

VS - 15 - R - SE / PHCH / EF -

size of an AHU access side optional code of a base optional the assembly method for VS 10-15 AHUs
R - right functions AHU functions (suspended AHUs)
L - left (the option before a base behind a base COMPACT – compact AHU
available for VS 21-650
units) AHU AHU

51

Exhaust AHUs: glycol system Hf = 80mm
HxW
Base AHU

VS 21÷650 sizes

L

VS - - R - G

VS Vmin Vmax L HW hxw h1 x w1
[m3/h] [CFM] [m3/h] [CFM] [mm] [mm] [mm] [mm] [mm]

21 1167 687 3080 1813 1490 528 961 313x821 250x660

30 1586 933 4322 2544 1490 660 961 440x821 380x613

40 1958 1152 5661 3332 1490 660 1168 440x1028 440x821

55 2878 1694 8216 4836 1856 795 1339 575x1199 440x1028

75 3805 2240 11379 6697 1856 915 1480 695x1340 575x1199

100 4863 2862 13550 7975 2221 1015 1660 795x1520 695x1340

120 5815 3423 18079 10641 2221 1052 1891 832x1751 795x1520

150 7167 4218 22420 13196 2221 1153 2085 933x1945 795x1520

180 8640 5085 27220 16021 2221 1357 2085 1137x1945 795x1520

230 10398 6120 33460 19694 2221 1357 2493 1137x2353 740x1913

300 13491 7941 44760 26345 2587 1656 2585 1436x2445 933x1945

400 18704 11009 60501 35610 2587 1889 3085 1669x2945 933x2650

500 21817 12841 74350 43761 2587 1889 3585 1669x3445 933x3150

650 28725 16907 98500 57975 2587 2366 3697 2146x3557 933x3250

* - for VS-10, VS-15 with water heater L= 758 mm, with electric heater L=1124 mm
Vmax - parametres description on page 20

Presented AHU’s length is proper for AHU that is equipped with direct driven PLUG-FANS (21÷650 delivered in sections).

** Optional functions are available for VS 21÷650 AHUs only.
*** Optional function is available for VS 10÷650 AHUs (VS 10÷15 AHUs are equipped with the function of mixing defined just as a set of two air dampers).

Inlet/Outlet configurations of E empty section are presented on page 53.
Inlet/Outlet configurations of M mixing box are presented on page 53.
Dimensions of optional functions are presented on page 53.

52

Optional Functions and Elements

Optional functions

N- E - empty section S - silencer
Electric
pre-heater

LH -& -4

VS LH mH VS LE hxw h2 x w2 mE VS LS mS
[mm] [kg] [mm] [mm] [mm] [kg] [mm] [kg]
10
10 731 31 15 731 220x500 - 22 10 731 26
15 731 37 21 25 15 731 31
21 731 44 30 731 250x660 - 33 21 1097 60
30 731 49 40 36 30 1097 68
40 731 56 55 731 313x821 220x500 40 40 1097 79
55 731 67 75 47 55 1097 101
75 731 75 100 731 440x821 220x500 54 75 1097 116
100 731 86 120 60 100 1097 141
120 731 94 150* 731 440x1028 250x660 65 120 1097 159
150 731 105 180* 72/116 150 1097 178
180 731 121 230* 731 575x1199 440x821 81/132 180 1097 205
230 731 133 300* 89/148 230 1097 243
300 731 149 400* 731 695x1340 440x1028 100/171 300 1463 345
400 731 182 500* 125/217 400 1463 510
500 - - 650* 731 795x1520 575x1199 136/241 500 1463 580
650 - - 150/280 650 1463 702
731 832x1751 575x1199

731/1097 933x1945 795x1520

731/1097 1137x1945 795x1520

731/1097 1137x2353 933x1945

731/1097 1436x2445 933x1945

731/1097 1669x2945 933x2650

731/1097 1669x3445 933x3150

731/1097 2146x3557 933x3250

* Data regarding length and weight refers to the section with a horizontal or a top/bottom inlet/outlet respectively.

M - mixing box W- F - secondary filter
Pad
Humidifier

-. LW -'

VS LM h2 x w2 h3 x w3 mM VS LW mW VS LF mF
[mm] [mm] [mm] [kg] [mm] [kg] [mm] [kg]

10 - - -- 10 - - 10 - -
15 - - 15 - -
15 - - -- 21 1097 56 21 731 39
30 1097 62 30 731 43
21 731 220x500 213x380 40 40 1097 69 40 731 47
55 1097 81 55 731 57
30 731 220x500 313x380 43 75 1097 110 75 731 69
100 1097 122 100 731 78
40 731 250x660 313x380 49 120 1097 136 120 731 83
150 1097 155 150 731 94
55 731 440x821 413x380 62 180 1097 171 180 731 106
230 1097 189 230 731 117
75 731 440x1028 413x380 73 300 1097 210 300 731 140
400 1097 253 400 731 181
100 731 575x1199 613x380 85 500 1097 271 500 731 200
650 1097 305 650 731 230
120 731 575x1199 613x380 91

150 1097 795x1520 713x740 126

180 1097 795x1520 913x740 155

230 1097 933x1945 913x740 188

300 1097 933x1945 1213x740 202

400 1097 933x2650 1513x740 252

500 1097 933x3150 1513x740 282

650 1097 933x3250 1913x740 304

Optional elements

FC - flexible connection AD - air damper



53

CASING

VENTUS Function and application Operation parameters

Construction: Non-skeleton casing
Non-skeleton construction made of ‘sandwich’ type
panels formed in ‘C’ shape and reinforced with an
inner system of bulkheads.

Panels’ construction: Casing:
- external material: zinc coated steel sheet Operation temperature: -40 ÷ +90°C.

S280GD+Z275 covered with anticorrosive coating;
- insulation: polyurethane foam.

Casing equipped with a system of connectors enabling Casing heat transfer coefficient
suspension of the unit. K= 0,6 W/m²K CLASS T2 Acc. EN 1886:2007
VS 10÷15 Access to an AHU: from the bottom. Thermal bridges coefficient:

MKbe=ch0a,n6i9cal strength of CLASS TB2 Acc. EN 1886:2007
casing:
AHU designed for indoor installation. -2500 Pa ÷ 2500 Pa < 2mm CLASS D1 Acc. EN 1886:2007

Casing tightness:
-400 Pa - 0,05 l/sm² CLASS L1 Acc. EN 1886:2007

+700 Pa - 0,13 l/sm² CLASS L1 Acc. EN 1886:2007

VS 21÷650 Non-skeleton construction made on the basis of Panels:
‘sandwich’ type panels formed in ‘C’ shape and Operation temperature: -40 ÷ +90°C.
reinforced with an inner frame system. Panel thickness: 40mm.
Panels construction: Metal sheet thickness: 0,5mm.
- external material: zinc coated steel sheet Thermal conductivity
PPU λ= 0,022 W/mK
S280GD+Z275 covered with anticorrosive coating; Casing fire rating:
- insulation: polyurethane foam; non-flammable material (NRO)
- internal material: zinc coated steel sheet Moisture absorption: 0,04%.
PPU density: ρ= 42kg/m³.
S280GD+Z275. Panel weight: m= 10kg/m².
Casing: Color –RAL 7031.
- VS 21-150 fixed to flanges (poliamid) or easy-
Anticorrosive protection:
to-transport steel frame (optional), ability of both 275g/m² galvanized zinc (Zn) coating
suspension and foundation of the whole installation External protection coating material/thickness:
on the floor; polyester / 25µm
- VS 180-650 fixed to easy-to-transport steel frame
enable to place whole installation on the floor. Compliance with standards: EN1886.
Access to the unit: from the side.

Unit designed for both indoor and outdoor
installation.

Available options of AHU location Supply AHUs Exhaust AHUs Supply and exhaust AHUs
Location options The option is available for all systems The option is available for all systems The option is available for all systems

Supporting H[fm=m8]0 Possible transport up to 3.3 [m] Possible transport up to 3.3 [m] Transport not available
blocks

VS 21–150 AHU The option is available for all systems The option is available for all systems The option is available for all systems
VS 180–650 AHU Possible transport of systems up to 4.4 Possible transport of systems up to 4.4
Transport - H[fm=m8]0 Possible transport of systems up to 4.4
foundation [m] equipped with a homogeneous [m] equipped with a homogeneous [m] equipped with a homogeneous
longitudinal element of the frame longitudinal element of the frame longitudinal element of the frame and
frame with the top part projecting over the

bottom one
No transport option for VS180-650

54

Advantages Teaching aids
Access side: VS 10÷15

Energy loss reduction – no thermal bridges. Right hand access side Left hand access side
Elimination of moisture condensation
phenomenon. Installation of: VS 10÷15
High rigidity of construction.
Labyrinth modules connection – elimination Suspended VENTUS AHUs, due to their small
of air leakages. dimensions and low weight, are ideal for installation
in the structural areas of buildings (suspended ceilings,
raised floors) directly in the ventilation duct system.

Elimination of moisture absorption. Non-skeleton technology
Insulation material with a very long In the construction of VTS AHUs a modern ‘non-skeleton’
decomposition period. technology is applied. The casing made of homogenous
Smooth internal surfaces of the casing – easy laminar panel in ‘C’ shape contains appropriate sub-
to maintain hygiene. assemblies carrying out a desired air handling process.
Light inspection panels - easy handling. This kind of construction in connection with a labyrinth
High resistance to external atmospheric system of modules connection constitutes a perfectly tight
factors. system similar in its construction to a vacuum flask. As a
High resistance to mechanical factors. result both the number of thermal bridges (elimination of
energy loss and moisture condensation phenomena) as
well as air leakages have been reduced. VENTUS AHUs – Frame constructions
non-skeleton casing

Access side: VS 21÷650

Right hand access side Left hand access side

Connection pins of the exchangers for STANDARD AHUs are located on the access side and for the COMPACT AHUs
on the opposite side.

Device location

The AHU should be located in such a way so as to W
enable connection of related systems (ventilation
ducts, piping, cable trays) without getting in the way W + 150
of inspection panels. For efficient installation, W x 0,9
operation and maintenance of the AHU, the
minimum distances between the access side and
fixed structural components of the installation
location (walls, supports, pipelines, etc.) should be
kept.
The access space can be built up with systems,
pipelines, support structures only in a way which
permits easy disassembly and assembly during
maintenance.

In the case of COMPACT AHUs it is necessary to take Access space
an apropriate space for connecting exchangers on the
side opposite to the access side into consideration.

55

FILTERS Function and application Design

Pre-filters Ventilation and air conditioning systems for rooms with Pleated filter material encased in a wire mesh installed
average requirements of air purity as the final filter. in a frame 50mm thick.
Flat filters Ventilation and air conditioning systems with high Filter material made of polyester fiber fabric.
purity requirements as a pre-filter in front of higher Assembly: system of guide rails enabling quick
VS 10÷650 efficiency filters. Possible applications: and easy replacement of filters.
- hotels;
G4 type - restaurants;
- cinemas;
- theatres;
- department stores;
- concert halls.

Preliminary bag filtersG4/F5 typeVentilation and air conditioning systems for rooms withFiltration bags 300mm long installed in a frame 25mm
VS 21÷650 average requirements of air purity as the final filter. thick.
Ventilation and air conditioning systems with high Filter material made of polyester fiber fabric.
purity requirements as a pre-filter before higher Vertical arrangement of filtration bags.
efficiency filters. Possible applications: Assembly: system of guide rails enabling quick
- hotels; and easy replacement of filters.
- restaurants;
- cinemas;
- theatres;
- department stores;
- concert halls.

Secondary filters Function and application Design

Secondary bag filters Ventilation and air conditioning systems for rooms Filtration bags 600mm long installed in a frame 25mm
with high requirements of air purity as the final filter: thick.
- hospitals; Filter material made of polyester fiber fabric.
- pharmaceuticals; Vertical arrangement of filtration bags.
- food industry; Assembly: system of guide rails enabling quick
- varnishing chambers; and easy replacement of filters.
- dehumidification chambers.

F7 type

VS 21÷650 Ventilation and air conditioning systems for clean Filtration bags 600mm long installed in a frame 25mm
Secondary bag filters rooms as the final filtration stage. thick.
Ventilation and air conditioning systems for clean Filter material made of polyester fiber fabric.
VS 21÷650 rooms as the pre-filter stage for activated carbon Vertical arrangement of filtration bags.
filters: Assembly: system of guide rails enabling quick
- production of electronic components, and easy replacement of filters.
- production of optical components,
F9 type - sterile operating theatres,
- pharmaceutical clean rooms.

56

Operation parameters Teaching aids

AMvaexr.agperefsislturaretiodniffrearteioncAem:=Δ9p2=%1.50Pa. Filter configurations
Max. air velocity: v=4,2m/s. - in base units:
Filter bypass leakage F9 Acc. EN 1886.
Ambient temperature: max. 70°C / 100%. G4 flat filter G4/F5 bag filter
Protection: The permitted level of filter contamination may be ref. VS 10÷650 ref. VS 21-650
signaled by the pressure differential control (an optional element).
Compliance with standards: EN779. - in optional functions - ref.VS 21:650 AHUs

MAvaexr.agperefsislturaretiodniffrearteioncAem:=90%. G4 flat filter G4/F5 bag filter F7/F9 bag filter
G4 - Δp=150Pa
F5 - Δp=250Pa Filters’ dimensions in optional functions are demonstrated on page 53.
Max. air velocity: v=4,6m/s.
Filter bypass leakage F9 Acc. EN 1886. Classification of filters used
Ambient temperature: max. 70°C / 100%.
Protection: the permitted level of filter contamination may be Class B2 C Q
signaled by the pressure differential control (an optional element). initial efficiency >75% _
Compliance with standards: EN779. PN-B-76003:1996 (gravimetric filtration <85%
Average filtration method) (gravimetric filtration >85%
Operation parameters ASHRAE efficiency (paraffin oil mist
St.52.2;1999 Class >90% method)
AMvaexr.agperefsislturaretiodniffrearteioncEem:=Δp8=0÷25805P%a.. EN 779:1992 (gravimetric filtration method)
Max. air velocity: v=3,6m/s. greenDIN 24184 Class >95% MERV
Filter bypass leakage F9 Acc. EN 1886. EUDROINVE2N41T845/5 Class method) (gravimetric filtration
Ambient temperature: max. 70°C / 100%. average effectiveness MERV 15
Protection: The permitted level of filter contamination may be for particulate 6,6-7, 7-8, 6-8 method) F9
signaled by the pressure differential control (an optional element). EU9
Compliance with standards: EN779. G4 MERV MERV 95<_E m
EU4 8-9, 9-10 13-14
ARevecroamgemfeilntrdaetidonfilrtaetriochEamn=g9e:0÷Δp9=5%35. 0Pa. 90%<_Am 150-250
Max. air velocity: v=3,6m/s. F5 F7 350
Filter bypass leakag F9 Acc. EN 1886.
Ambient temperature: max. 70°C / 100%. EU5 EU7
Protection: The permitted level of filter contamination may be
signaled by the pressure differential control (an optional element). 40%<_E m 80%<_E m
Compliance with standards: EN779. <_60% <_90%

Initial pressure of a clean filter [Pa] 30-60 50-80 100-200
Maximum allowed pressure drop [Pa] 150
250

Sizes of some particulate in the air fine coarse
standard
finest

FILTER TYPE precipitator

active carbon cyclone separators
sedimentation chambers

vapors

solid air pollutants regular particulate heavy particulate

PARTICLE SIZE viruses bacteria pollen rain drops
smoke or fumes fog
fly ash drizzle
tobacco smoke
macromolecules oil mist soot

WAVE rtg radiation visible light infrared light ultrashort waves
LENGTH ultraviolet light

MKM 0,001 0,01 0,1 1 10 100 1000

source: Recknagel, Sprenger

Average particulate content in air

Technological area or process Average Most frequent Upper Limit
concentration particle size of the size
Non-urban areas During rain of particles [mm]
Large urban area [mg/m3] [mm]
During dry periods 0,8 4
Coke fired furnace Residential area 0,05 2,0 25
flue gases Industrial area 0,10 7,0 60
0,10 20 100
Industrial facilities 0,30-0,5
Habitats 60 1000
Department stores 1,0-3,0 - -
Workshops 1-2
2-5 - -
Cement factories 1-10 - -
Air in mines - -
100-200 - -
Hand loaded 100-300 - -
Mechanically loaded - -
10-50
Furnace flue gases 100-200 - -
1000-15000

source: Recknagel, Sprenger

57

Exchangers
Heaters
Function and application Design

Water heater

Heating of the air supplied to the room. Copper pipes with aluminium plate fins (Cu/Al).
Heating of the air after the dehumidification process. Distance between fins:
VS 10÷15 - 2,1mm
Used if a heating water system is available (local VS 21÷650 - 2,5mm
boiler or municipal heating system). Fin thickness: 0,1mm (Al).
Pipe wall thickness: 0,37mm.
WCL type Pipe diameter:
VS 10÷15 – ⅜”
VS 21÷650 – ½”
Collector diameter:

VS DN Material Connection
10,15
20 brass thread R3/4”
21
30,40 (≤4R) 25 brass thread R1”

30,40 32 brass thread R11/4”
55,75 (≤4R)
Water heater 100,120,150 (2R) 50 steel thread R2”
55 (6R,8R)
40 100,120,150 (4R) 80 steel thread R3”
c1 2x80 steel thread 2xR3”
180 (2R)
c1 120 ÷ 650
DN 180 ÷ 400 (8R)
500 ÷ 650 (≥2R)

~80* Number of heater rows R: 2÷8.
~120** Connections of exchanger are equipped with drain and
c vent.

* VS 10÷40 The connectors are on the tending side of the AHU.
** VS 55÷650 Connecting the exchanger to the power supply in a
cocurrent system results in reduction of the heating
capacity of more than 10%.
Exchanger is connected to the hot water supply by
means of the top or bottom connector depending
on the access side of the AHU in order to enable
countercurrent air flow with reference to liquid flow in
the cooler – universal design of exchanger: right/left.

Electrical heater

Heating of the air supplied to the room. A complex of resistance heating elements made of Cr-Ni-Fr
Heating of the air after the dehumidification process. alloy, power: 6kW/400V each.
Casing: frame made of zinc-coated steel.
Used when heating water is not available or in case Terminal strip.
of lower heating powers. As standard, the heater is equipped with an overheat pro-
tection thermostat.
HE type If the device is staged together with a control system,
the heater is integrated with a control module.
VS 10÷650 The wires are connected to the terminal strip of the
exchanger on the AHU access side.
Desired power can be obtained by means of the system
of smooth regulation (HE module as an optional control
element) or gradual regulation (a diagram of connec-
tions available in the manual).

Electrical heater

58







Energy recovery Design

Regeneration Function and application The rotor which is 200mm thick, is installed on a shaft with
bearing and built in a steel construction frame.
Non- hydroscopic and hydroscopic rotary exchanger Rotor filling: a spiral built of two alternating layers of flat and
corrugated aluminium sheets 0.07mm thick creating ducts
Indirect energy recovery (sensible heat) accumulated in of hydraulic diameter D=1.6mm.
the exhaust air flow and its transfer to the counter current Variable rotary speed drive system enabling max. exchanger
supply air flow. efficiency and regulation of energy recovery level.
Indirect recovery of latent heat (moisture) when the rotor Ppurge sector reducing the penetration of ‘dirty’ exhaust air
surface temperature on the side of the exhaust air is lower into the supply air to the minimum.
than the supply air dew-point temperature. Brush seals placed on the rotor’s perimeter and the dividing
Energy recovery without total separation of the supply and line providing additional protection against air leakages.
exhaust air flows (air leakages of 2 ÷ 5%). Brush seals placed on the rotor’s perimeter and the
Application in block supply-exhaust AHUs. dividing line providing additional protection against air
leakages.
Type: AIR - AIR

vertical system: VS 21÷650

Recuperation Function and application Design

Cross-flow exchanger Indirect energy recovery (sensible heat) accumulated A system of crosswise formed 0.12÷0.2mm thick
in the stream of exhaust air and its transfer to the aluminium plates, between which separated streams of
Type: AIR - AIR ventilation air supplied to the rooms. supply and exhaust air flow in an alternating crosswise
Heat recovery at very high separation of the streams of pattern.
supplied and exhaust air (99.9%). Internal by-pass duct (VS-21÷650) with installed air
Application in block supply-exhaust AHUs. damper which allows to divert air flow outside the
exchanger “window”:
horizontal system: VS 10÷15 - disabling energy recovery function;
vertical system: VS 21÷650 - function of the exchanger’s anti-freeze protection.
Drop eliminator with a drain pan.
Glycol system, Run-around coil
Indirect energy recovery (sensible heat) with a total System of two exchangers – placed in the exhaust air flow,
(100%) separation of supply and exhaust air flows. which takes over the heat (cooler) and transfers it through
System applied when there is a necessity to separate an intermediate agent (water and glycol solution) to an
(even at significant distances) supply from exhaust exchanger, mounted in the supply air flow (heater).
AHUs. Construction of exchangers included in the recovery
system is similar to the construction of water VTS
Type: AIR – INTEMEDIARY LIQUID - AIR exchangers.
Number of rows R: 8.
Glycol installation system with a circulating pump and
control system is not included in VTS offer.
The connectors are placed on the access side of the
AHU.
Exchanger is connected to the liquid supply by
means of the top or bottom connector depending
on the access side of the AHU in order to enable
countercurrent air flow with reference to liquid flow
in the exchanger – universal exchanger right/left type.
Connecting the exchanger to the liquid supply in a
paralell flow fashion system results in reduction of the
cooling by up to 20%.

VS 21÷650

62

Operation parameters Teaching aids

Efficiency up to 85% (depends on the temperature differences Total heat recovery efficiency Heat recovery sensible efficiency
between the air streams, moisture and ratio of air flows) – exchanger (sensible and latent heat) (sensible heat)
class A acc. EN 13053.
Exchanger tightness for nominal operation parameters: 97%. η = (h2-h1) η = (t2-t1)
Max. permissible air flow speed: 5,2m/s. c (h3-h1) t (t3-t1)
Rotor rotational speed: 10rpm.
Life of bearings: Enthalpy and temperature of the supply air: Exhaust air enthalpy and temperature:
LLR11e00c==om2505m00e00n00dhhe//dLLm5500==ax12. 52p50re00s00s00uhhre((<>drVoVSpS-:-114225000))Pa. h1 [kJ/kg], t1 [oC] – before the exchanger h3 [kJ/kg], t3 [oC] – before the exchanger
Ambient temperature: -30÷70°C. h2 [kJ/kg], t2 [oC] – behind the exchanger h4 [kJ/kg], t4 [oC] – behind the exchanger

Cooperation between the exchanger and the fan unit Supply air

Basic configuration Configuration for a unit V2 V1 3x3
cooperating with an internal 2 x2
mixing box t2:x2 t1:x1
x
V3 V4 4 x4
x11
t3:x3 t4:x4

Compliance with standards: EN 308, EN 13053. Exhaust air t4<t3
x4<x3
Operation parameters t2>t1
x2>x1

Efficiency up to 75% (depends on the temperature differences. Supply air V4 t3 3 x3
between the air streams, moisture and ratio of air streams) – exchanger t4:x4 2x2
class B acc. EN 13053. V1 t2
Exchanger tightness for nominal operation parameters: 99.9%. x44
Max. permissible air flow speed: 3.8m/s. t1:x1 x11 x
Recommended max. pressure drop: 450Pa.
Max. difference between air flow pressures of supply and exhaust air: V3 V2 t4
1500Pa.
Ambient temperature: -40÷80°C. t3:x3 t2:x2
Compliance with standards: EN 308, EN 13053.
Exhaust air
t4<t3 tR
t2>t1 x4=x3
x2=x1

Efficiency up to 55% - exchanger class C acc. EN 13053. Exhaust air V3 t3 3 x3
Max. permissible air flow speed: t2 2x2
heater v = 4,4 m/s V4 t3:x3
cooler v =3,5 m/s tR x
Max. operation pressure of the agent: 1.6MPa=16 bar (tested 21 bar). t4:x4 V2 t4 x11 4x4
Min. agent temperature depends on the glycol concentration.
Gglycol content: max. 50%. V1 t2:x2
Pressure drop on the exchangers/agent flow available in technical
specification (CCOL). t1:x1
Compliance with standards: EN 779, EN 13053.

Supply air t4<t3
x4<x3
t2>t1
x2=x1

63

Fan units

Function and applicationSWSI type Design
PLUG fan unit with a direct drive
The fan and motor unit is placed on a common frame
Low and medium pressure ventilation and air isolated from the AHU structure by rubber vibration
conditioning systems, with total pressures of up to isolators.
2000 Pa. Drive type: direct – the fan impeller is installed on the
Single-draw centrifugal fan without casing with motor shaft.
impeller’s blades curved backwards. TEFC type motors (Totally Enclosed Fan Cooled).
VS 10 – equipped with the fan set and a motor with the One speed motors complying with the IEC standard.
following parameters n= 2790 rpm, P=0,55 kW. Frequency converter (a standard element of the fan
VS 15 – equipped with the fan set and a motor with the unit).
following parameters n=2850 rpm, P=0,75 kW. Impeller made of SAN (styrene/acrylonitryle) construc-
VS 21÷VS 150 – equipped with fan sets (direct driven). tion material with 20% glass fiber.
VS 180÷VS 300 – equipped with double fan sets (direct
driven).
VS 400÷VS 500 – equipped with triple fan sets (direct
driven).
VS 650 – equipped with fourfold fan sets (direct driven).

Maximum scope of fan set operation

Maximum operational range for PLUG FANs, Maximum operational range for PLUG FANs working
impeller size range 225-355 mm in Twin-fan array, impeller size range 500-630 mm

Pst [Pa] 2800 Pst [Pa] 3000
2600 2800
2400 VS 225 VS 250 VS 315 VS 355 2600 2x500 2x560 2x630
2200 2400
2000 1000 2000 3000 4000 5000 6000 7000 8000 9000 2200 10000 20000 30000 40000 50000 60000
1800 2000
1600 1800
1400 1600
1200 1400
1000 1200
1000
800
600 800
400 600
200 400
200
0
0 0
0

V [m3/h] V [m3/h]

Maximum operational range for PLUG FANs, Maximum operational range for PLUG FANs working
impeller size range 450-630 mm in Multi-fan array, impeller size range 560-630 mm

Pst [Pa] 3000 Pst [Pa] 2800
2800 2600
2600 VS 450 VS 500 VS 560 VS 630 2400 3x560 3x630 4x630
2400 2200
2200 5000 10000 15000 20000 25000 30000 2000 20000 40000 60000 80000 100000 120000
2000 1800
1800 1600 V [m3/h]
1600 1400
1400 1200
1200 1000
1000
800
800 600
600 400
400 200
200
0
0 0
0

V [m3/h]

64

Operation parameters Teaching aids
AHU outlet configurations - PLUG centrifugal fan
Voltage rating: 3x400V AC.
Motor rpm.: 1440 rpm, 2860 rpm. VS h x w h[1mxmw]1 VS 10÷15
Protection type: PTC. [mm] - VS 21÷650
Motor winding insulation class F: life (co-operation with exchanger). -
LLeifvee-slpoafnporoftbeectairoinng: sI:PL5150.= 20000h / L50 = 100000h. 10 220x500
Ambient temperature: 60°C. 15 250x660 250x660
Technical specification of frequency converters: p. 74. 21 313x821 380x613
Protection: operation of the fan unit may be monitored by a 30 440x821 440x821
pressure differential switch (optional element). 40 440x1028 440x1028
Compliance with standards: EN 1886, EN 25136, ISO 5801, AMCA 55 575x1199 575x1199
standard 210. 75 695x1340 695x1340
100 795x1520 795x1520
120 832x1751 795x1520
150 933x1945 795x1520
180 1137x1945 740x1913
230 1137x2353 933x1945
300 1436x2445 933x2650
400 1669x2945 1199x3150
500 1669x3445 1520x3250
650 2146x3557

Standard sized of PLUG FAN fans in units SFP – common indicator of the ventilation system capacity

Size of fan rotors in the PLUG FAN option with direct drive SFP (Specific Fan Power) indicates the relation of electrical energy consumption
to the amount of supplied and/or exhaust air through mechanical ventilation unit
VENTUS Economic Low noise within a given time limit. It is the only parameter which reflects characteristics of air
21 250 250 flow in an AHU as well as the one in the whole network with one value only.
30 315 315
40 355 355 SFP = .P + Psupply el.exhaust el. [kW/m3/s] or [W/m3/h]
55 400 450
75 450 500 Vmax
100 500 560
120 560 630 For calculations in the case of supply-exhaust AHUs a greater value of air flow
150 560 630 capacity for supply or exhaust air should be assumed.
180
230 2 x 500 2 x 500 The analyses of ventilation systems’ energetic capacity indicate that values between
300 2 x 560 2 x 560 1.8 and 2.3 m/s are optimum linear air flow speeds in a ventilation unit cross
400 2 x 630 2 x 630 section.
500 3 x 560 3 x 560
650 3 x 630 3 x 630
4 x 630 4 x 630

Change of fan’s capacity in relation to change of rotary speed

V2 = n2
V1 n1

Change of fan’s accumulation in relation to change of rotary speed

( )ΔP2= n2 2
n1
ΔP1

Demand for fan power in relation to change of rotary speed

( )P2 = n2 3
n1
P1

65

Optional Functions and Elements

Recirculation Function and application Design

Mixing box Direct energy recovery (sensible heat, latent heat) as Mixing box is equipped with an appropriate
a result of mixing two streams of air – the external air doublesystem of inlets/outlets armed with air throttles
with a part of the exhaust air. regulating the proportional share of the external air to
AHU operation in fast heating mode for units the exhaust one (the recirculation air).
equipped with an „internal” mixing box. Configurations of inlets/outlets:

M type In case of high concentration of toxic substances
in a room using the recirculation function is
forbidden.
The recirculation function constitutes an optional
element of a unit’s equipment.

VS 21÷650

Dimensions of inlets/outlets: p. 53.

w

Silencing Function and application Air damper

Silencers Design

66 Reduction of the level of acoustic power and in 140 mm thick silencing elements (plates) internal filling is
consequence acoustic pressure (noise) from the made of sound absorbing and incombustible mineral wool
draw and discharge side of the ventilation or air of 60 and 80 kg/m3 density, respectively.
conditioning AHU, generated by the fan unit. Plates’ casing: plastic frame.
Silencing function constitutes an optional element The outer surface of the elements is covered with a thin
of a unit’s equipment. unwoven fabric (“veil”), which prevents mineral wool
SLCR type particles from getting into the supply air flow.
Number of plates per silencer: 2-13 (depending on the size
Level of acoustic pressure [dB] of a specific AHU).

NC curve distribution (Noise criteria)

80

70

60 NC-65

NC-60

NC-55

50

NC-50

NC-45

40

NC-40

NC-35

30

NC-30

20 Audibility NC-25
treshold NC-20

10 NC-15
31,5
63 125 250 500 1000 2000 4000 8000

Frequency in octave bands [Hz]

Operation parameters Teaching aids

Efficiency up to 90% - exchanger class A acc. EN 13053. exhaust air V3 x2
Operation temperature: -40 ÷ +70°C.
Compliance with standards: EN 13053. V4 t3:x3

t4:x4

Mixing box inlet and outlet dimensions

VS inlet (outlet) top (bottom) face Side inlet (outlet) V1 V2

h2xw2 W1 H1 L1 h3xw3 L1 H1 t1:x1 t2:x2
213x380 165 115 supply air
21 220x500 228 112 200
30 228 178 200 165 131
313x380 165 131
40 250x660 252 163 200

55 440x821 257 135 200 413x380 165 149 x1
165 209
75 440x1028 224 195 200 V1 2M h2 - hM x2 - xM t [oC] - air temperature
V2 1M hM - h1 xM - x1 w [kg/kg] - amount of moisture in the air
100 575x1199 228 200 125 613x380 165 159 = = = h [kJ/kg] - enthalpy of air
120 344 196 125 165 177 V [m3/h] - air flow

150 795x1520 280 137 200 713x740 165 178 V1 = 2M V2 = 1M
180 280 239 200 V 12 V 12
913x740 165 180
230 272 200 125 165 180
300 933x1945 318 319 125
1213x740 165 179

400 933x2650 215 436 125 1513x740 165 146
165 146
500 933x3150 215 436 125

650 933x3250 220 674 125 1913x740 165 184 Level of acoustic power
The acoustic power level, which is an objective value describing the source of noise
in acoustic terms, is used for acoustic calculations (it is neither dependent of the
distance of the sound source nor the room type).

Operation parameters Level of acoustic pressure
The measure of acoustic pressure of sound in relation to reference pressure
Maximum air velocity: v=5m/s. amounting to
Operation conditions: -40 ÷ +70°C. po = 2•10–5 Pa (audibility threshold):

Compliance with standards: EN ISO 7235:2005. Lp = 20 log (p/po) [dB]

Silencing values for VENTUS AHU silencers Acoustic pressure as a value perceived by human ear depends on the sound source
and room type. Therefore the figures provided in technical specifications of
VS 125Hz 250Hz 500Hz 1000Hz 2000Hz 4000Hz 8000Hz Lw[dB] equipment describe only an approximate value of the level of acoustic pressure.
10 6,3 9,4 15,7 18,8 20,1 20,4 20,0 26,4
15 6,8 10,2 17,0 20,4 21,7 22,0 21,5 28,0 Two and more sound sources level increase [dB] Level difference
21 10,6 16,0 26,7 32,0 34,1 34,7 33,9 40,0 Summation of noise level from identical
30 8,7 13,0 21,7 26,1 27,8 28,2 27,6 33,9 sound sources:
40 10,0 15,0 24,9 30,0 32,0 32,5 31,8 37,9
55 9,4 14,1 23,5 28,1 30,0 30,4 29,9 36,0 Ls = L+10 lg n [dB(A)]
75 9,0 13,5 22,4 26,9 28,7 29,1 28,6 34,7
100 8,9 13,4 22,3 26,8 28,6 29,1 28,5 34,7 Where n –number of sources
120 9,5 14,3 23,8 28,6 30,5 31,0 30,3 36,5 Ls - total sound level
150 9,5 14,2 23,7 28,5 30,3 30,8 30,2 36,3 L - sound level of individual sources
180 8,4 12,6 21,0 25,2 26,9 27,3 26,8 33,0
230 9,5 14,2 23,7 28,4 30,3 30,8 30,1 36,3 n
300 11,4 17,1 28,3 34,0 36,3 36,9 36,0 42,2
400 11,7 17,4 29,0 34,9 37,2 37,8 36,9 43,0 Level difference
500 12,8 19,3 32,1 38,5 41,1 41,7 40,9 46,9
650 11,2 16,8 28,0 33,6 35,8 36,4 35,7 41,7 For two sources (n=2) with identical acoustic power the sound level rises
by 3 dB(A) at n=10 increase by 10 dB(A). For summation of two sources with
different sound levels, the level of the louder source must be increased according
to the chart depending on the level difference between the two sources. For more
sound sources all sound sources should be totaled one by one.

The letter “A” added to the acoustic pressure level unit [dB(A)] - shows
that the indicated noise level takes into account the reaction of human
middle ear to sounds of different frequencies. It is known that low
frequencies of the same acoustic pressure are more tolerable to humans
than high frequencies, which is shown by the “A” curve.

67

Optional Functions and Elements

Pad Humidifier Function and application Design
Air damper
Humidifying of supply air. Humidifier pad made of CELDEK II material.
Improvement of in-door climate conditions by Humidifier casing made of stainless steel.
adjustment of supply air humidity. Direct water drainage (VS 21-VS 55).
System of recirculating water supported by pump
Cutting off the air flow through AHU. (VS 75-VS 650).
Control of air flow through AHU. Droplet eliminator integrated with humidifier pad
Control of air mixing rate in the supply and exhaust (VS 75-VS 650).
AHU system. Water drainage system securing against too high water
Protection of cross-flow exchanger - by-pass type air level in the tank.
damper. Float-valve for water supply and water level control
(VS 75-VS 650).
A.DAMP type Aluminim blades protected with rubber seals on the
edges.
Aluminum frame.
Driven by plastic gears istalled inside aluminium
framework of the damper.
Damper is equipped with a square pin adjusted for
cooperation with an actuator (dampers with hydraulic
diameters greater than 4m2 have two pins coupled with
a connector.
Assembly:
- outside AHU’s casing;
- mixing box: inside AHU’s casing.

Flexible connection FLX.CNC type Protection of the ventilation system (ducts) against Flange material:
Air intake, Air terminal transmission of vibrations from the ventilation or air 1 mm thick galvanized steel, 30 mm wide.
conditioning AHU. Fire resistance: 97HB [ISO1210]
Compensation of axial symmetry of ventilation ducts in PVC-C material with UV stabilizer. Surrounding
relation to the AHU’s axis. temperature: 30oC to +97oC.
Fire resistance: 97HB [ISO1210].
Protection of the ventilation or air conditioning AHU Elastic material: polyester fabric covered with PVC.
against the effects of outdoor factors (water, sand) for Surrounding temperature -30oC to +70oC.
outdoor systems. Operation position: span 110 mm.
Each of these components can operate as an PE are equipped with ground load in order to equalize
independent option. potentials.
Optional:
Galvanized steel collar - thickness 1 mm, width
30 mm
Air intake: made from aluminum, air intake handlebars
made from ABS.
Air terminal: made from aluminum, air terminal handle-
bars made from ABS.

H

VS 21÷650INT.LGHT type AHU inspection and maintenance. LW
Lighting
Casing.
VS 21÷650 Glow tube.
Installation: Filtration compartment, Fan compartment.
68

Operation parameters Teaching aids

Air Humidifying based on adiabatic water evaporation realized in Water flow for pad humidifiers
the humidifier pad.
Max air face velocity threw the humidifier pad: 3,00 m/s (VS 21-VS AHU Min. recommended Nominal water flow Adiabatic humidifying process,
55); 4,00 m/s (VS 75-VS 650). Size water flow through for best humidifying followed by air re-heating
Supplying water pressure range: 0,15 ÷ 0,75 Mpa.
Requirements regarding supplying water quality – standard the pad performance
municipal water.
Reaching final air temperature and humidity after re-heating VS l/min l/min T4 4
realized on secondary heater. T2 2
Leakages behind the closed blades: 50m3/h/m2 – at pressure 21 0,54 1,08
difference of 100Pa. 30 0,79 1,58
Ambient temperature: -40 ÷ +70 °C.
40 0,97 1,95 T3 3
w 55 1,49 T3’ 3’
75 1,68 2,98
Pressure strength of material in accordance with DIN24194.
Position of operation: span 110mm. 3,37
Ambient temperature: -40 ÷ +70 °C.
100 2,24 4,47 i4
i 2≈ i 3≈ i 3’
120 2,71 5,42

150 3,31 6,61

180 4,16 8,32 T1 1
230 5,03 10,05

300 6,79 13,58 i1

400 9,64 19,28

500 11,27 22,54

650 15,26 30,53 x2-4 x3’

Formula for humidifying efficiency ratio calculation is a measure of approaching the air
condition to the dew point ф=100%
εa = x3 - x2
x3’ - x2 Ÿ 100%

xxx323’ – humidity ratio after humidifying process for point 3 enthalpy like in point 3
– humidity ratio before humidifying process for point 2
– humidity ratio for dew point of the air having the same

0.6 Air flow velocity
in a populated area
Air flow velocity – average value [m/s]
averag teovpalvualeue
0.5 Usually in a populated area (up to
1.8m above the floor and at 0.15m
0.4 intervals from all surfaces of the room)
at 24°C the recommended velocity of
air flow is 0,15 m/s. You can
0.3 climatic approximately determine air velocity
comfort
in the room using the chart. Use
0.2 the standards for more accurate

0.1 bottom value calculations.
Source: EN ISO 7730, ASHRAE 55.

0 20 21 22 23 24 25 26 27 28
air temperature [°C]

WL H Type of room Multiple of air Calculating the amount of
VS replacement [h-1] ventilation air considering the
Utility room required multiple of replacement
[mm] [mm] [mm] Bank 1÷2 V = n • Vp [m3/h]
2÷3
Swimming pool 3÷4

21 128 881 373 Library, Classroom 3÷5 Vp – [m3] – cubic capacity of the room
Shopping Centre, n – [h-1] – required multiple of replacement
30 128 881 493 Mechanical Workshop 3÷6 in the room
Auditorium, Office room
40 128 1088 493 Cinema, Theatre, Garage, Warehouse, 3÷8 You need to remember that the method
of determining the amount of ventilation
55 128 1259 630 Cloakroom 4÷6 air based on the replaced multiple is a
Hotel room simplified method not considering the
75 128 1400 730 4÷8 thermal load of the room, the number of
Server room 5 ÷ 10 persons or concentration of pollutants.
100 128 1580 830 5 ÷ 15 The values in the table based on the DIN
Physical laboratory 6÷8 1946, ASHRAE standard should be treated
120 128 1810 893 8 ÷ 12 as approximate.
Conference room, Shop 10 ÷ 15
150 128 2002 993 10 ÷ 30
Restaurant
180 128 2002 1193
Bar, Laundry
230 128 2410 1193
Kitchen
300 128 2504 1493

400 128 3003 1730

500 128 3504 1730

650 128 3615 2193

Power supply voltage: 230V AC. Calculation of the amount of ventilation air depending on the number
Power: 11W. of people
Protection clas: IP54.
Ambient temperature: 0 ÷ +70°C. V = n • Vi [m3/h]

Vi - [m3/h] – amount of the outdoor air (so called hygienic minimum) per person
n – number of persons

Usually the value of Vi is assumed from 20 to 60 m3/h per person, depending on the type of a
room. In any case, the amount of air calculated in this way is at the same time the minimum
amount of outdoor air that must be supplied to the room.

Source: DIN 1946, ASHRAE standard. 69











Operation parameters HMI ADVANCED UPC

Supply voltage: 230 V AC.
Output signal: potential-free (switchover) contact, 12 V DC / max. 0.1 A.
Power consumption: 5W.
Protection class: IP 40.
Ambient temperature: -10 ÷ +40°C.

3

3

Regulation method: Opening time: - ON/OFF 12
- two-point; 80÷120s (spring 10s) 1. LCD display
- smooth 0-100%. 0-10 V: 80÷90s (spring 10s)
Supply voltage: 24 V AC. Number of cycles: 60 000. Displays the available settings and the current values
Input signal: Max. air damper area: 4 m2. 2. Main menu structure
ON/OFF Protection class: IP54.
0 - 10 V DC Ambient temperature: Main screen with key statuses and settings.
Rated torque: 16 Nm. -20 ÷ +50°C • HMI operation mode – used for setting main operation mode with HMI
Rotation angle 90°. • Operation mode – displays the current AHU status resulting from the HMI
configuration, alarms, external control signals, etc.
The connection between the sensor and control box is made with • temp HMI setting – for input of main temperature setting of the HMI
a shielded cable. • Current temperature – displays the main measurement temperature.

Adjustment range: 0÷100%. Second screen of main status
Rated operating voltage: 3*400 V/50 Hz. • Fans – displays the current status and speed of fans
Control circuits supply voltage: 24 V AC. • Air dampers – displays the current status and opening of air dampers
Input signal: • Regulator – displays the status and output of the main regulator for the heating/
digital 3x 24 V DC cooling function
Output signal: • Recovery – displays the current status for the heat recovery
digital 6x 24 V DC
PWM 1x 24 V DC. The parameter highlighted with the cursor is the parameter being
Ambient temperature: 0÷50°C. edited.
The parameter not highlighted with the cursor is the readout parameter.
Actuator Valve 3. Function keys
Adjustment range: 0 - 100%. Operating characteristics: BELL
Supply voltage: 24 V AC/DC. Equal percentage/proportional • opens the alarm management screen
Input signal: 0-10 V DC. k/ v4s:02/,558/ 4,0 / 6,3 / 10 / 16 / 25 PRG
Rated torque: / 100
5-20Nm pforer sksvus=re2:,5÷58 Pressure drop • quick opening of the Calendar main screen
Nominal M-- ΔΔedρρiummaamxx ==te22m40p00erkkaPPtaaurkkevv:ss ≤ 25 • quick setpoint configuration on the Calendar screens
1800 N faonrgklevs=: 9100°0. > 25 • push and hold the key on the ALARM screen to clear the errors
Rotation ESC
Protection class: IP54. Mkkvvass==xim120,u50m÷: 55g8ly÷:c-o11l20c0o÷°nCt1e2n0t °iCn the • returns to the previous screen and cancels the parameter change
Ambient temperature: Up arrow
-20 ÷ +50°C • moves the cursor up through the menu screens (when the cursor is in left top
medium: 50%. corner)
Ambient temperature: • increases the parameter value
-20 ÷ +50°C ENTER
• moves the cursor through the screen – the cursor jumps to the next editable
Protection class: IP 44.
Maximum current load: 100A. parameter. Read-only parameters are not highlighted with the cursor.
Dimensions: 200x150x100mm. • confirms entered values
• opens submenu from the main menu level:

• Parameters
• Calendar
• Alarms
• Configuration
• Service
Down arrow
• Moves the cursor down through the menu screens (when the cursor is in left top
corner)
• decreases the parameter value

75

Control elements

Frequency converter Function and application Design

Smooth regulation of the AHU air flow by proportional The electronic circuit enabling motor voltage frequency
change of the motor-fan unit rotational speed. adjustment and maintaining optimal U/f ratio.
Maintaining fixed AHU operating parameters at The circuit is installed inside a plastic housing.
varying air flow resistances of ductworks. The fan ensuring cooling of the converter internal
Protection of maximal value of morot current. circuits.
Controlling of fan start-up with simultaneous The operating panel allowing entering the frequency
protection of maximal value of start-up current. converter parameters.
Integration with external analog and binary signals
Displaying and modification of fan-set working
parameters.
The converter is designated only for VS 10÷650
AHUs equipped with a direct drive fan assemblies.

HMI Basic - simplified user interface Electronic circuit with thermistor measuring element
Measurement of the air temperature in room. (NTC) installed in a plastic housing.
Setting and reading of basic operating parameters of LCD display.
ventilation or air conditioning units: Operating panel.
- air parameters; Knob facilitating setting of parameters.
- efficiency change;
- operation mode change;
- breakdown states.
Independent Calendar.
Knob default function – air temperature setting.

Optional control element.

HMI Advanced user’s external interface Electronic circuit installed inside a plastic housing.
Setting and reading of advanced operating parameters of Legible textual LCD display.
ventilation or air conditioning units. Communication cable (3 m as standard) for the con-
Frequency converters remote programming. troller connection with the RJ 11 connector.
Management and cancelation of units operational errors is Electronic circuit installed inside a plastic housing.
done by full text description. Internal temperature senor connected to the digital
Management of the controller main Calendar. integrated circuit.
Configuration of the controller universal inputs and Legible textual LCD display.
outputs. Navigation keys located on the front panel.

Optional control element.

HMI OPTIMA simplified user interface
Integration with OPTIMA controllers.
Measurement of the air temperature in rooms.
Setting and reading of basic operating parameters of venti-
lation or air conditioning units:
- air parameters;
- efficiency change;
- operation mode change;
- breakdown states.
Optional control element.

76

Operation parameters HMI OPTIMA

Adjustment range: Drive) 12
20 ÷ 100 Hz - 1 relay input with change-over
Supply voltage: contact 1. LCD Display
1- and 3-phase 200 ÷ 240 V - 1 transistor binary output (LG Displays the available settings and the current values
AC SV..iC5, LG SV..iG5A)
3-phase 380 ÷ 480 V AC - 1 analog output 0/4..20mA 2. Main menu structure
Supply voltage rated frequency (Danfoss Micro-Drive) AHU status – indicates current ventilation and control system condition.
48 ÷ 63 Hz Modbus RTU communication • Switched off – normal state, non-emergency stopping of the unit
Control circuits (program- over RS485 bus • Switched on – unit in operation, the fans and heating/cooling/heat recovery functions
mable): Motor connection: 3-phase are active, according to the current unit status and demand
- 5 binary inputs (LG SV..iC5, Ambient temperature: • Alarm condition – unit under alarm condition
Danfoss MicroDrive); 8 binary 0 ÷ 40°C • Fault stop – the unit stopped by an alarm
inputs (LG SV..iG5A) Protection class: IP20 • Preheating – preheating of the water heater in order to avoid antifreeze alarm
- 1 analog input 0..10V (LG); Forced cooling by built-in fan triggering during the start-up
0/4..20mA (Danfoss Micro- • Service mode – the unit is stopped and ready for configuration of basic parameters,
such as control system application code
The above parameters are specific for a frequency convertor • Fast heating – special mode of recirculation enables fast heating of rooms with a
models that were selected as an examples. maximum possible recirculation
The frequency convertor types and models to be used in AHUs, • Rundown – a special mode for stopping the unit equipped with an electrical heater
each time have to be confirmed with VTS Sales Representative. or cooler with a direct evaporation system; delays stopping of the fans in order to
The frequency convertors comply to EMC Directive 89/336/EEC acquire safe conditions for a heat exchangers
(RFI filters for the Second Environment are not required). Operation mode – main setting for the operation mode used for integration with HMI
OPTIMA
Power supply. • Stop – the unit is switched off
Directly from the control gear • 1st speed level – the unit is on, the fans are rotating with speed of the 1st speed level
~24 VAC (-15..+10%) or 22..35 VDC (low efficiency)
Temperature measurement: 0 ÷ 40°C. • 2nd speed level – the unit is on, the fans are rotating with speed of the 1nd speed
Measurement accuracy: ±0.5 K. level (high efficiency)
Communication with the controller via Modbus RTU protocol. • Stand-by – the unit is stopped to save the energy, however, is ready for an automatic
Communication cable length: max. 500 m. start-up in order to maintain rooms temperature within the set range
Protection class: IP30. • Calendar – the unit operates in AUTO mode, according to real time clock
Ambient temperature: -10 ÷ +60°C / φ<90%, without condensation. program
Temperature setting – temperature setting for the controller
Power supply: directly from the UPC controller. • Low limit: 5°C
Communication port: serial port, RS485 standard. • High limit: 35°C
Communication cable length: max. 1200 m. • Default: 22°C
Connection method: 1:1. Temp. displaying – current value measured by the main temperature sensor
Protection class: IP31. PARAMETERS – a link to main operating parameters readings
Ambient temperature: -20 ÷ +60°C / φ<85%, without condensation. CALENDAR – a link to AUTO mode settings
SETTINGS – a link to detailed configuration of the controller
SERVICE MENU – a link to the basic controller settings, e.g. application code; used in
the controller Service mode

Supply voltage: 24 VDC.
Power supply: Directly from the control gear.
Temperature measurement: 0 ÷ 50°C.
Air humidity: φ<85%, without condensation.
Measurement accuracy: ±0.5 K.
Response time: 30 sec.
Communication with the controller via RS 485, Modbus RTU bus.
Protection class: IP30.

77

Control elements

Function and application Design

VS UPC control box for air supply and supply-exhaust units Set of fuse-switches on the power supply circuit of the
frequency converters.
Ventilation or air condition unit operating parameters Controller.
adjustment, control and protection - operation, Mains switch.
temperature, air flow and fault conditions. PC (polycarbonate) housing with dimensions:
The AHU operation according to the Calendar with a 450 mm x 640 mm x 170 mm
possibility of a division into a time “zones”. The above dimensions apply to the largest controller.
Remote management of the unit operation by means of
external communication modules - HMI Basic or HMI Set of fuse-switches on the power supply circuit of the
Advanced user interfaces. frequency converters.
Integration with an external modules in the scope of: Controller.
- start signal; Mains switch.
- fire protection signal; PC (polycarbonate) housing with dimensions:
- START/STOP circuit. 240x400x130 mm
Analogue input for strap-on water temperature sensor The above dimensions apply to the largest controller.
returning from water heater (NTC 10 standard).

CG OPTIMA control box

Operation of AHUs equipped with direct drive ”PLUG”
type fans, supplied from a frequency converters.
Protection and control of air supply and air supply-exhaust
units equipped with:
- two fan assemblies with a frequency convertors;
- two air dampers;
- cooler or heater;
- heat recovery unit.
Analogue input for strap-on water temperature sensor
returning from water heater (NTC 10 standard).

CG 0-1 control box for air exhaust units Set of motor protection elements.
Main switch.
The air exhaust unit operating parameters adjustment, Control panel with the rotational speed setter.
monitoring and protection - operation, fault conditions. PC (polycarbonate) housing with dimensions:
Integration with an external modules in the scope of: 460x340x170 mm
- start signal; Protection degree: IP 42.
- fire protection signal; Selenoid valve for direct pad supply installed in the
- START/STOP circuit; control cabinet (VS 21-VS 55).
- CO detector. System of internal relays controlling the position of main
Integration with a frequency converters operating in a humidifier valves in fully open-fully closed mode
configuration of 3 pre-defined fan speeds. (VS 75-VS 650).

Pad humidifier control box

Control over humidifier operations.
Protection against dry operation of water pump
(VS 75-VS 650).
Periodical replacement of water in the tank by temporary
opening dumping valve – protection against tank contami-
nation due to water evaporation.

Control cabinet realizes only role of the humidifier
operation control. It is not a device supporting
temperature and humidity regulation of supplied air.

78

Operation parameters Example of UPC controller connections

Supply voltage: 3x400 V or 1x230 VAC.
Frequency: 50Hz ± 1Hz.
Control circuits supply voltage: 24 VAC.
Power supply start permission signal of small circulating pump in the
water heater qualitative control circuit, 1x230 VAC, Max. 10 A.
Controller
Communication with a frequency convertors and HMI Basic interface
- RS485 bus
- Modbus RTU communication protocol
External communication using digital and analogue universal inputs/
outputs.
1:1 type communication with HMI Advanced.
Communication with BMS via Modbus TCP/IP protocol (optional).

Supply voltage: 3x400 V or 1x230 VAC. N3 HMI Adv. – connection of HMI ADVANCED UPC user interface
Frequency: 50Hz ± 1Hz. N2 HMI Basic – connection of HMI BASIC UPC user interface
Control circuits supply voltage: 24 VAC. FC IC5/iG5A – connection of frequency converters ModBUS communication
Power supply start permission signal of small circulating pump in the Terminal XG (24VAC) – three-way valves power supply output
water heater qualitative control circuit, 1x230 VAC, Max. 10 A. Ground XG0 9GND0 – ground of dampers and three-way valves actuators power supply
Supply voltage: 3x400 V or 1x230 VAC. 1Y1, 2Y1, Y3 – connection of air dampers actuators communication
Frequency: 50Hz ± 1Hz. E5, E8 / E4 – AHU start confirmation / AHU alarm
Control circuits supply voltage: 24 VAC. B1 / B2 / B3 / B4 – connection of temperature sensor of supply air / room or exhaust / external / behind
Protection class: IP54. energy recovery
Ambient temperature: 0 ÷ 50°C. B5 – connection of multi-function analog reference
Control cabinet power supply: ~230 VAC. S1F – connection of fire alarm switch
1S1H, 1S2H / 2S1H – filter contamination control pressure switch on supply / exhaust
S6 / S7 – multi-function switch / optional multi-function switch
Y3 – connection of recirculation damper actuator communication

Dimensions of control boxes

UPC VS 10÷75 VS 40÷150 VS 40÷150 VS 180÷300 VS 400÷650
Power supply CG UPC CG UPC SUP CG UPC SUP-EXH CG UPC CG UPC
1*230 VAC 3*400 V AC
3*400 V AC 3*400 V AC 3*400 V AC
Application VS 10÷75 VS 40÷150 VS 40÷150 VS 180÷300
Supply, Supply VS 400÷650
Supply, Supply, Supply&Exhaust
Supply&Exhaust 1 Supply&Exhaust Supply&Exhaust
3÷11 kW
335x400x165 VS 180÷300 VS 650
Supply Supply

Max umber 2 2 48
of fans up to 2,2 kW
Motor 335x400x165 up to 11 kW 3÷11 kW 3÷11 kW
nominal 335x400x165 335x550x170 640x450x170

power range
Dimensions

CG 0-1 VS 21÷150 CG 0-1 VS 180÷300 CG 0-1 VS 400÷650 CG 0-1
Power supply
1*230 or 3*400 V AC 3*400 V AC 3*400 V AC
Application VS 10÷75 VS 180÷300 VS 400÷650
Exhaust
Max umber of fans 1 Exhaust Exhaust
Motor nominal power range 2 4
up to 11 kW
Dimensions 315x380x170 3÷11 kW 3÷11 kW
315x380x170 315x380x170

OPTIMA VS 10÷75 CG OPTIMA VS 40÷150 CG OPTIMA SUP CG OPTIMA SUP-EXH
Power supply 1*230 V AC 3*400 V AC 3*400 V AC
VS 10÷75 VS 40÷150 VS 40÷150
Application Supply, Supply
1 Supply&Exhaust
Max umber of fans Supply&Exhaust 3÷11 kW 2
Motor nominal power 2 315x380x170
up to 11 kW
range up to 2,2 kW 315x380x170
Dimensions
285x235x115

79

AS - Applications for supply units

Applications intended for VS 21-650 equipped Applications intended for VS 10-15 AHUs
with frequency converters

Application Functions available in particular applications Application Functions available in particular applications
code code
HW HE CW DX CWHW PRC. MIX. SUM. PHT. FAST. HW HE CW DX CWHW PRC. MIX. SUM. PHT. FAST.
*AS 1 BPS CMBR ER HW HTG AS 1 BPS CMBR ER HW HTG
*AS 2 AS 2
*AS 4 AS 4
AS 5 AS 5
AS 6 AS 6
*AS 8 AS 8
AS 9 AS 9
AS 10 AS 10
*AS 16 AS 16
*AS 65 AS 65
*AS 66 AS 66
*AS 68 AS 68
AS 69 AS 69
AS 70 AS 70
*AS 72 AS 72
AS 73 AS 73
AS 74 AS 74
*AS 80 AS 80
AS 193 AS 193
AS 194 AS 194
*AS 196 AS 196
AS 197 AS 197
AS 198 AS 198
*AS 200 AS 200
AS 201 AS 201
AS 202 AS 202
*AS 208 AS 208
AS 257
AS 258
AS 261
AS 262
AS 265
AS 266

The control system application code explanation: Symbols:
* - the application available for both the UPC control system and
HW - water heater
the OPTIMA control system
no star - the application available only for the UPC control HE - electrical heater

system CW - water cooler
** - maximum size of the unit which can be operated with the
DX - cooler with direct medium evaporation system
OPTIMA control system: VS 150
AS - control system application for air supply units CW/HW - reverse operation of water heat exchanger (heating -
AD - control system application for air supply-exhaust units cooling)
AG - control system application for air supply-exhaust units with
PRC.BPS - cross-flow heat exchanger by-pass operation
glycol heat recovery system
AP - control system application for air supply-exhaust units with MIX.CMBR - air mixing chamber

cross-flow heat exchanger SUMM.ER - cooling recovery
AR - control system application for air supply-exhaust units with
PHT.HW - water preheater
thermal wheel
AE - AE - control system application for air exhaust units (not FAST.HTG - fast heating function

compatible with air supply units)

80

Control applications
Supply AHUs

Control Protection

Control of room temperature (CG UPC, OPTIMA), optionally supply air Limiting the allowed supply air temperature.
temperature (CG UPC, OPTIMA) or exhaust air temperature (CG UPC). Fan unit protection – the function is active:
Control of the energy recovery level – first stage of heating/cooling. - if an electric heater is applied.
Air flow control. Overload protection of a drive unit.
Operation according to calendar – temperature, efficiency, operation mode Anti-frost protection of a water heater.
(OPERATION, STAND-BY, STOP). Protection against overheating of an electric heater.
STAND-BY – maintaining the minimum, set indoor temperature. Optional protection against minimal and maximal temperature of medium
* Initial heating of external air. returning from the water heater with use of Strap-on temperature sensor,
standard NTC 10 (UPC) or PT 1000 (OPTIMA).
Information The control application layouts have been prepared on the basis of water
exchangers.
Information on outdoor, supply, exhaust and indoor air temperatures. The quantity of applied pressure switches for filters depends on the filters’
Filter contamination info. configuration (p. 57).
Alarm status info. Optional Strap-on temperature sonsor is not a part of VTS offer.
Analog and digital input and output status info.

81

Control applications
Supply AHUs

Control Protection

Control of room temperature (CG UPC, OPTIMA), optionally supply air Limiting the allowed supply air temperature.
temperature (CG UPC, OPTIMA) or exhaust air temperature (CG UPC). Fan unit protection – the function is active:
Control of the energy recovery level – first stage of heating/cooling. - if an electric heater is applied.
Air flow control. Overload protection of a drive unit.
Operation according to calendar – temperature, efficiency, operation mode Anti-frost protection of a water heater.
(OPERATION, STAND-BY, STOP). Protection against overheating of an electric heater.
STAND-BY – maintaining the minimum, set indoor temperature. Optional protection against minimal and maximal temperature of medium
* Initial heating of external air. returning from the water heater with use of Strap-on temperature sensor,
standard NTC 10 (UPC) or PT 1000 (OPTIMA).
Information The control application layouts have been prepared on the basis of water
exchangers.
Information on outdoor, supply, exhaust and indoor air temperatures. The quantity of applied pressure switches for filters depends on the filters’
Filter contamination info. configuration (p. 57).
Alarm status info. Optional Strap-on temperature sonsor is not a part of VTS offer.
Analog and digital input and output status info.

82











Control applications
Supply-exhaust AHUs: cross-flow exchanger

Control Protection

Control of room temperature (CG UPC, OPTIMA), optionally supply air Limiting the allowed supply air temperature.
temperature (CG UPC, OPTIMA) or exhaust air temperature (CG UPC). Fan unit protection – the function is active:
Control of the energy recovery level – first stage of heating/cooling. - if an electric heater is applied.
Air flow control. Overload protection of drive unit.
Operation according to calendar – temperature, efficiency, operation mode Anti-frost protection of a water heater.
(OPERATION, STAND-BY, STOP). Protection against overheating of an electric heater.
STAND-BY – maintaining the minimum, set indoor temperature. Anti-frost protection of an energy recovery exchanger.
* Initial heating of external air. Optional protection against minimal and maximal temperature of medium
returning from the water heater with use of Strap-on temperature sensor,
Information standard NTC 10 (UPC) or PT 1000 (OPTIMA).
The control application layouts have been prepared on the basis of water
Information on outdoor, supply, exhaust and indoor air temperatures. exchangers.
Filter contamination info. The quantity of applied pressure switches for filters depends on the filters’
Alarm status info. configuration (p. 57).
Analog and digital input and output status info. Optional Strap-on temperature sonsor is not a part of VTS offer.

88

Control applications
Supply-exhaust AHUs: cross-flow exchanger

Control Protection

Control of room temperature (CG UPC, OPTIMA), optionally supply air Limiting the allowed supply air temperature.
temperature (CG UPC, OPTIMA) or exhaust air temperature (CG UPC). Fan unit protection – the function is active:
Control of the energy recovery level – first stage of heating/cooling. - if an electric heater is applied.
Air flow control. Overload protection of a drive unit.
Operation according to calendar – temperature, efficiency, operation mode Anti-frost protection of a water heater.
(OPERATION, STAND-BY, STOP). Protection against overheating of an electric heater.
STAND-BY – maintaining the minimum, set indoor temperature. Anti-frost protection of an energy recovery exchanger.
* Initial heating of external air. Optional protection against minimal and maximal temperature of medium
returning from the water heater with use of Strap-on temperature sensor,
Information standard NTC 10 (UPC) or PT 1000 (OPTIMA).
The control application layouts have been prepared on the basis of water
Information on outdoor, supply, exhaust and indoor air temperatures. exchangers.
Filter contamination info. The quantity of applied pressure switches for filters depends on the filters’
Alarm status info. configuration (p. 57).
Analog and digital input and output status info. Optional Strap-on temperature sonsor is not a part of VTS offer.

89

AR - Applications for supply – exhaust AHUs with rotary
regenerator energy recovery system

Applications intended for VS 21-650 equipped with frequency converters

Application Functions available in particular applications Application Functions available in particular applications
code code
HW HE CW DX CWHW PRC. MIX. SUM. PHT. FAST. HW HE CW DX CWHW PRC. MIX. SUM. PHT. FAST.
*AR 0 BPS CMBR ER HW HTG AR 512 BPS CMBR ER HW HTG
*AR 1 AR 513
*AR 2 AR 514
*AR 4 AR 516
AR 5 AR 517
AR 6 AR 518
*AR 8 AR 520
AR 9 AR 521
AR 10 AR 522
*AR 16 AR 528
AR 128 AR 640
AR 129 AR 641
AR 130 AR 642
*AR 132 AR 644
AR 133 AR 645
AR 134 AR 646
*AR 136 AR 648
AR 137 AR 649
AR 138 AR 650
*AR 144 AR 656
AR 256 AR 768
AR 257 AR 769
AR 258 AR 770
AR 260 AR 772
AR 261 AR 773
AR 262 AR 774
AR 264 AR 776
AR 265 AR 777
AR 266 AR 778
AR 384 AR 896
AR 385 AR 897
AR 386 AR 898
AR 388 AR 900
AR 389 AR 901
AR 390 AR 902
AR 392 AR 904
AR 393 AR 905
AR 394 AR 906

AG - control applications for air supply-exhaust unit arrangements
with glycol recuperation systems

Applications intended for VS 21-650 equipped with frequency converters

Application Functions available in particular applications Application Functions available in particular applications
code code
HW HE CW DX CWHW PRC. MIX. SUM. PHT. FAST. HW HE CW DX CWHW PRC. MIX. SUM. PHT. FAST.
AG 1 BPS CMBR ER HW HTG AG 137 BPS CMBR ER HW HTG
AG 2 AG 138
AG 5 AG 257
AG 6 AG 258
AG 9 AG 265
AG 10 AG 266
AG 129 AG 385
AG 130 AG 386
AG 133 AG 393
AG 134 AG 394

90

Control applications
Supply-exhaust AHUs: rotary exchanger

Control Protection

Control of room temperature (CG UPC, OPTIMA), optionally supply air Limiting the allowed supply air temperature.
temperature (CG UPC, OPTIMA) or exhaust air temperature (CG UPC). Fan unit protection – the function is active:
Control of the energy recovery level – first stage of heating/cooling. - if an electric heater is applied.
Air flow control. Overload protection of drive unit.
Operation according to calendar – temperature, efficiency, operation mode Anti-frost protection of a water heater.
(OPERATION, STAND-BY, STOP). Protection against overheating of an electric heater.
STAND-BY – maintaining the minimum, set indoor temperature. Anti-frost protection of an energy recovery exchanger.
* Initial heating of external air. Optional protection against minimal and maximal temperature of medium
returning from the water heater with use of Strap-on temperature sensor,
Information standard NTC 10 (UPC) or PT 1000 (OPTIMA).
The control application layouts have been prepared on the basis of water
Information on outdoor, supply, exhaust and indoor air temperatures. exchangers.
Filter contamination info. The quantity of applied pressure switches for filters depends on the filters’
Alarm status info. configuration (p. 57).
Analog and digital input and output status info. Optional Strap-on temperature sonsor is not a part of VTS offer.

91

Control applications
Supply-exhaust AHUs: rotary exchanger

Control Protection

Control of room temperature (CG UPC, OPTIMA), optionally supply air Limiting the allowed supply air temperature.
temperature (CG UPC, OPTIMA) or exhaust air temperature (CG UPC). Fan unit protection – the function is active:
Control of the energy recovery level – first stage of heating/cooling. - if an electric heater is applied.
Air flow control. Overload protection of a drive unit.
Operation according to calendar – temperature, efficiency, operation mode Anti-frost protection of a water heater.
(OPERATION, STAND-BY, STOP). Protection against overheating of an electric heater.
STAND-BY – maintaining the minimum, set indoor temperature. Anti-frost protection of an energy recovery exchanger.
* Initial heating of external air. Optional protection against minimal and maximal temperature of medium
returning from the water heater with use of Strap-on temperature sensor,
Information standard NTC 10 (UPC) or PT 1000 (OPTIMA).
The control application layouts have been prepared on the basis of water
Information on outdoor, supply, exhaust and indoor air temperatures. exchangers.
Filter contamination info. The quantity of applied pressure switches for filters depends on the filters’
Alarm status info. configuration (p. 57).
Analog and digital input and output status info. Optional Strap-on temperature sonsor is not a part of VTS offer.

92

Control applications
Supply-Exhaust AHUs: Glycol System (Run-around coil)

AG - 1

2S1H**

2Y1 2M1 2Y1
B2*
E7

1S1H Y1 1S2H**

2Y1

T S2F 1M1 N2/N3
T S3F B2*
2Y1 1M2 B1
B1
Y1
*

T S4F

AG - 257

2S1H**

2M1

E7

B4 2Y1
B2*
1S1H Y7 1S2H**

B6 T S2F 1M1 N2/N3
T S6F T S3F B2*
1Y1 1M2 B1
B3 E6

* Y6 Y1

T S4F

Control Protection

Control of room temperature (CG UPC, OPTIMA), optionally supply air Limiting the allowed supply air temperature.
temperature (CG UPC, OPTIMA) or exhaust air temperature (CG UPC). Fan unit protection – the function is active:
Control of the energy recovery level – first stage of heating/cooling. - if an electric heater is applied.
Air flow control. Overload protection of a drive unit.
Operation according to calendar – temperature, efficiency, operation mode Anti-frost protection of a water heater.
(OPERATION, STAND-BY, STOP). Protection against overheating of an electric heater.
STAND-BY – maintaining the minimum, set indoor temperature. Anti-frost protection of an energy recovery exchanger.
* Initial heating of external air. Optional protection against minimal and maximal temperature of medium
returning from the water heater with use of Strap-on temperature sensor,
Information standard NTC 10 (UPC) or PT 1000 (OPTIMA).
The control application layouts have been prepared on the basis of water
Information on outdoor, supply, exhaust and indoor air temperatures. exchangers.
Filter contamination info. The quantity of applied pressure switches for filters depends on the filters’
Alarm status info. configuration (p. 57).
Analog and digital input and output status info. Optional Strap-on temperature sonsor is not a part of VTS offer.

93

air temperaturePsychrometric chart

94

Notes

95

Notes

96